Problem Set III: Energy Metabolism and Temperature
1)
Assume the metabolic rate of a small frog is 25 ul O
2
/g · h at a temperature of 10 ºC.
What are the metabolic rates of the frog at temperatures of 20, 30 and 40 ºC if the Q
10
is
2? What are the rates at these temperatures if the Q
10
is 2.5? 1.0?
2)
The reaction rates for a process (units arbitrary) are given below for three different
temperatures. (A) Calculate the Q
10
values for each temperature interval (i.e., 1725; 25
30). (B) Within which temperature interval is the reaction rate most sensitive to
temperature change?
Temperature, ºC
Reaction Rate
17
100
25
175
30
300
3)
If the reaction rate for a process is 5 units at 15 ºC, what would be the reaction rate at
20 ºC if the Q
10
for the temperature interval is 3.4?
4)
The equation describing the relationship between rates of oxygen consumption and
body mass in mammals is:
V
02
= 0.676 M
0.75
where V
02
is liters of oxygen per hour and M is body mass in kilograms. Derive an
equation which relates the rate of oxygen consumption
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 Fall '08
 Julian
 Thermodynamics, Energy, Mass, Heat, Kilogram

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